<template>
  <div class="login_container">
    <el-row>
      <el-col :span="12" :xs="0"></el-col>
      <el-col :span="12" :xs="24">
        <el-form class="login_form" :model="loginForm" :rules="rules" ref="loginForms">
          <h1>Hello</h1>
          <h2>欢迎来到硅谷甄选</h2>
          <el-form-item prop="username">
            <el-input
                :prefix-icon="User"
                v-model="loginForm.username"
            ></el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
                type="password"
                :prefix-icon="Lock"
                v-model="loginForm.password"
                show-password
            ></el-input>
          </el-form-item>
          <el-form-item>
            <el-button class="login_btn" type="primary" size="default" @click="login" :loading="loading">
              登录
            </el-button>
          </el-form-item>
        </el-form>
      </el-col>
    </el-row>
  </div>
</template>

<script setup lang="ts">
import {User, Lock} from '@element-plus/icons-vue'
import {reactive, ref} from 'vue'
import {useRouter,useRoute} from 'vue-router'
//引入用户相关的小仓库
import useUserStore from "@/store/modules/user.ts";
import {ElNotification} from "element-plus";
import {getTime} from "@/utils/time.ts";

let $router = useRouter()
let $route =useRoute()
let userStore = useUserStore()
//获取el-form组件
let loginForms = ref()
//定义按钮加载效果
let loading = ref(false)
//收集账号与密码数据
let loginForm = reactive({username: 'admin', password: 'atguigu123'})


//自定义校验规则函数
const validatorUserName = (rule: any, value: any, callback: any) => {
  //rule：校验规则对象
  //value:表单元素文本内容
  //callback:符合条件，callback放行通过，不符合：注入错误提示信息
  if (value.length >= 5) {
    callback()
  } else {
    callback(new Error('账号长度至少5位'))
  }
}

const validatorPassword = (rule: any, value: any, callback: any) => {
  if (value.length >= 6) {
    callback()
  } else {
    callback(new Error('密码长度至少6位'))
  }
}
//定义表单验证规则
const rules = {
  username: [
    // {required: true, message: '请输入账号', trigger: 'blur'},
    // {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
    {trigger:'change',validator:validatorUserName}
  ],
  password: [
    {trigger:'change',validator:validatorPassword}
    // {required:true,message:'请输入密码',trigger:'blur'},
    // {min:6,max:16,message:'长度在 6 到 16 个字符',trigger: 'blur'}
  ]
}
//登录按钮回调
const login = async () => {
  await  loginForms.value.validate()
  loading.value = true
  try {
    await userStore.userLogin(loginForm)
    let redirect = $route.query.redirect as string
    await $router.push({path: redirect || '/'})
    ElNotification({
      title: `Hi,${getTime()}好`,
      message: '欢迎回来',
      type: 'success'
    })
    //登录成功,加载效果也消失
    loading.value = false
  } catch (error) {
     //登录失败
    loading.value = false
    ElNotification({
      title: '登录失败',
      message: (error as Error).message,
      type: 'error'
    })
  }

}
</script>

<style lang="scss" scoped>
.login_container {
  width: 100%;
  height: 100vh;
  background: url('@/assets/images/background.jpg') no-repeat;
  background-size: cover;

  .login_form {
    position: relative;
    width: 80%;
    top: 30vh;
    background: url('@/assets/images/login_form.png') no-repeat;
    background-size: cover;
    padding: 40px;

    h1 {
      color: white;
      font-size: 40px;
    }

    h2 {
      color: white;
      font-size: 20px;
      margin: 20px 0px;
    }

    .login_btn {
      width: 100%;
    }
  }
}
</style>
